How much does the badminton court in Jinan Olympic Sports Center charge?
Price: annual card: 2800 yuan/year. Use the annual card four times a week for up to two hours each time.
Stored value card: There are three types of stored value cards: 1000 yuan, 3,000 yuan and 5,000 yuan. Use stored-value cards with different prices to enjoy different price concessions, ranging from 15 yuan-30 yuan.